The factors of the number 620,928 are: 1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 21, 22, 24, 28, 32, 33, 36, 42, 44, 48, 49, 56, 63, 64, 66, 72, 77, 84, 88, 96, 98, 99, 112, 126, 128, 132, 144, 147, 154, 168, 176, 192, 196, 198, 224, 231, 252, 264, 288, 294, 308, 336, 352, 384, 392, 396, 441, 448, 462, 504, 528, 539, 576, 588, 616, 672, 693, 704, 784, 792, 882, 896, 924, 1008, 1056, 1078, 1152, 1176, 1232, 1344, 1386, 1408, 1568, 1584, 1617, 1764, 1848, 2016, 2112, 2156, 2352, 2464, 2688, 2772, 3136, 3168, 3234, 3528, 3696, 4032, 4224, 4312, 4704, 4851, 4928, 5544, 6272, 6336, 6468, 7056, 7392, 8064, 8624, 9408, 9702, 9856, 11088, 12672, 12936, 14112, 14784, 17248, 18816, 19404, 22176, 25872, 28224, 29568, 34496, 38808, 44352, 51744, 56448, 68992, 77616, 88704, 103488, 155232, 206976, 310464, 620928.
If you add them up, you will get the total of 620,929. Now subtract 620,928 to get 1,646,532